Tube-flanging tool



Oct'. 20, 1931. E. s. CORNELL, JR

TUBE FLANGING TOOL Filed Oct. 4. 1930 Patented Oct. 20, 1931 UNITED STATES PATENT oFFlcE EDWARD s. CORNELL, JB., or wArEnTowN. ooNNE'c'rrcUT, Assr'eNoa To THE CHASE couramnamconromran, or wnrnanunmlcomcrrcur, A oonrommon TUBE-ELAN GIN G TOOL l A'pplication med October 4, 1980. Serial No. 486,318.

This invention relates to an improvement in flangin tools for forming fianges upon the ends o tubes or pipes of malleable metal, such as copper, lead, etc., and constitutes an improvement upon the tool disclosed in my copending application filed December 26, 1929, Serial No. 416,473.

The main object of this invention 'ist to provide a simple and convenient tool .of the type referred to characterized by its capacity for being readily converted to iange tubes or pipes of various diameters, whereby a flanging .outfit may be provided ata low cost for manufacture and with minimum bulk and weight for Hanging tubes or pipes of various diameters. l

With the above and other objects in view as will appear from the following, my invention consists in a tube-Hanging tool having certain details of construction and combinations of parts as will be hereinafter described and particularly recited inthe claims.-

In the accompanying drawings:

Fig. 1 is an end view of a langing tool constructed in accordance with my invention;

Fig. 2 isa view thereof in side elevation;

Fig. 3 is a similar view but with the stopl sleeve in' longitudinal section;

Fi 4 -is a view corresponding to Fig. 3 but s owingv a tube sleeved over the pilot and flanged byengagement with the deiectingsurface;

l ig. 5 is a detached viewin side elevation of the mandrel member; and

Figs. 6, 7, 8 and 9 are corresponding views partly in side elevation and partly in longitudinal section and illustrating a series of.

interchangeable stop-sleeves capable of being organized with the mandrel member to adapt the tool to flange tubes of various diameters.

'In the tube-Hanging tool herein chosen for the illustration of my invention, I employ a mandrel memberll) consisting of an axially extending pilot 11 and a series offour (more or less) stepped conical deecting surfacesv 12, 13, 14 and'15, forming a stepped series .of annular-tube-langers at the; base of the said pilot and each V adapted to deect and fiange a tube of a predetermined size. The

mandrel member also consists of an externall14, and 15.

1y threaded body-portion 16' and an annular sleeve-seat 17 formed by the inner surface of an overhanging head 18 which lis designed to be struck by a hammer or mallet for the purpose of forcing the tool into atube, as will hereinafter appear.

The pilot 11 is formed with a tapered outer end 19 and is adapted to be axially en-I Itered into a tube 20 (Fig. 4) the end of which 1t is desired to provide w1th a ange 21 for the purpose of attaching the vtube to a tubefitting such as straight-line couplings Tfs, el-

t1ce.

In Hanging tubes or pipes fory the purpose above referred to, it is necessary to determine and limit the degree to whichv tubes bows, etc.,'in accordance with,common pracare dared and for this purpose, I employ a Y series of stop-sleeves 22, 22h, 22c and 22d (four more or less' in number, corresponding to the number of deflecting-surfaces upon the mandrel-member), each of which is formed with internal threads 23 for interengagement with the externally-threaded bod -portion 16 of the mandrel-member 10, an with an inwardly-projecting annular stop-liange 24. The inner end of the stop-Han e 24 terminates in an annular st'o -shoul er 25 which constitutes the smallest lnternal diameter of y the operativeend of the stop-sleeve and is adapted to be engaged by the outer edge of the flange 21 0f the tube 20to limit the outward are thereof, as clearly shown in Fig. 4. F

vThe'stop-sleeves 22, 22", 22, and 22d correspond to each other with the exception that their respective annular'stop-shoulders 25 are of different. diameters to adapt them to limit the flare of the flanges of tubes of various diameters. For instance, the annular stop-shoulder 25 of the sleeve 22is the correct diameter to limit the outward yiare of a tube of the appropriate size for deilection by the conical deflecting-surface 12. Similarly, the diameters of the stop-shoulders 25 of the sleeves 22h, 22, and 22d are respectively suited in size to check the Haring of tubes by the conical In the use of the particular form of my defiecting-surfaces 13,

I invention herein chosen for illustration, the

first step is to apply. to the mandrel member- 10 the correct size of stop sleevefor the partube is continued until the edge of the flange 21 thereof firmly abuts against the annular stop shoulder 25 of the particular stop sleeve, which at the time is organized with the mandrel member.

While I have herein shown and described stop sleeves as adapted to be organized with the mandrel member by means of screwthreads, it` will be apparent without further illustration that my invention comprehends other modes of securing the parts together for axial separation. I wish to call attention to the fact that the angle of the deflecting surfaces 12, 13, 14, and 15 may vary widely to meet different requirements."

By providing a series ofstepped conical deflecting surfaces 12, 13, 14, and 15, instead of the continued surfaces shown in my copending application already referred to, the

tube is more readily centered, should it exceed the size of the pilot 11. `Furthermore, the annular stop shoulder of a given stop sleeve may lie well below the particular-deflecting surface which it is intended to complement, so that even though the said stop sleeves are not fully screwed home, the likelihood ofthe flange of the tube working its way beneath the stop flange 24 is rendered negligible.

I claim:

1. In a flanging-tool, the combination with a mandrel-member provided at one end with a plurality of stepped tube-dellecting surfaces; of a separately-formed stop-sleeve axially removable from and adapted to elnbrace a portion of the said mandrel-member and provided with an inwardly-extending annular flange terminating in an annular stop-shoulder located in close proximity to one of the stepped tube-deflecting surfaces of the said mandrel-member for limiting and determining the flaring of a tube or similar article thereby.

2. In a Hanging-tool, the combination with a mandrel-member formed upon its periphery with screw-threads and formed at one end with a plurality of stepped tube-delleoting surfaces; of a separately-formed internally- 1,sa7,7sa i lshoulder located in close proximity to one of the stepped tube-deflecting surfaces of the saidmandrel-member for limiting and determlnmg the flaring of a tube or similar article thereby. Y

3. In-a Hanging-tool, the combination with a mandrel-member comprising a relativelylarge body-portion, a pilot projecting therefrom for entry into a tube, and a plurality of v stepped tube-deflecting surfaces formed upon the sa1d body-portion around the base of the said pilot; of a separately-formed stop-sleeve axially removable from and adapted to embrace a portion o f the said mandrel-member and rovided with an inwardly-extending annu ar flange terminating in an annular threaded stop-sleeve adapted to be axially threaded upon the said mandrel-member and prov1ded with an inwardly-extending annular flange terminating in an annular stop- 

